Outline of evolution

The following outline is provided as an overview of and topical guide to evolution:

A diagram showing the relationships betweens various groups of organisms

Evolution – change in heritable traits of biological organisms over generations due to natural selection, mutation, gene flow, and genetic drift. Also known as descent with modification. Over time these evolutionary processes lead to formation of new species (speciation), changes within lineages (anagenesis), and loss of species (extinction). "Evolution" is also another name for evolutionary biology, the subfield of biology concerned with studying evolutionary processes that produced the diversity of life on Earth.

Fundamentals about evolution

Introduction

  • Introduction to evolution  A non-technical explanation of the basic concepts and principles of biological evolution
  • Evolution  Change in the heritable characteristics of biological populations over successive generations
  • Evolution as fact and theory  A discussion of the meaning and usage of the terms evolution, fact and theory

Basic principles

  • Macroevolution  Evolution on a scale at or above the level of species
    • Speciation  The evolutionary process by which populations evolve to become distinct species
      • Natural speciation
        • Allopatric speciation  Speciation that occurs between geographically isolated populations
        • Peripatric speciation  Speciation in which a new species is formed from an isolated smaller peripheral population
        • Parapatric speciation  Speciation within a population where subpopulations are reproductively isolated
        • Sympatric speciation  A process through which new species evolve from a single ancestral species while inhabiting the same geographic region
      • Artificial speciation
      • Hybrid speciation  A form of speciation where hybridization between two different species leads to a new species, reproductively isolated from the parent species
    • Despeciation  The loss of a unique species of animal due to its combining with another previously distinct species
    • Anagenesis  Gradual evolutionary change in a species without splitting
    • Extinction  Termination of a taxon by the death of the last member
  • Microevolution  The change in allele frequencies that occurs over time within a population
    • Artificial selection  Process by which humans use animal and plant breeding to selectively develop particular phenotypic traits
    • Natural selection  Mechanism of evolution by differential survival and reproduction of individuals
      • Sexual selection  A mode of natural selection wherein members of one biological sex choose mates of the other sex, and compete with members of the same sex
    • Mutation  A permanent change of the nucleotide sequence of the genome of an organism
    • Gene flow  The transfer of genetic variation from one population to another
    • Genetic drift  The change in the frequency of an existing gene variant in a population

Subfields

  • Biogeography  The study of the distribution of species and ecosystems in geographic space and through geological time
  • Ecological genetics  The study of genetics in natural populations
  • Evolutionary biology  Study of the processes that produced the diversity of life
  • Evolutionary ecology  Study of how interactions among species and between species and their environment affect species through selection and adaptation
  • Evolutionary physiology  Study of how the functional characteristics of individuals in a population of organisms have responded to selection across multiple generations
  • Evolutionary taxonomy  Classification of organisms based on shared descent, serial descent, and degree of evolutionary change
  • Experimental evolution  Use of laboratory and field experiments to explore evolutionary dynamics
  • Molecular evolution  The process of change in the sequence composition of cellular molecules across generations
  • Phylogenetics  Study of the evolutionary history and relationships among individuals or groups of organisms
  • Population genetics  Study of genetic differences within and between populations including the study of adaptation, speciation, and population structure
  • Paleontology  Scientific study of prehistoric life
  • Systematics  The study of the diversification and relationships among living things through time

History

Evolutionary theory and modelling

See also Basic principles (above)

Population genetics

  • Population genetics  Study of genetic differences within and between populations including the study of adaptation, speciation, and population structure
  • Process
    • Mutation  A permanent change of the nucleotide sequence of the genome of an organism
    • Selection
      • Natural selection  Mechanism of evolution by differential survival and reproduction of individuals
        • Sexual selection  A mode of natural selection wherein members of one biological sex choose mates of the other sex, and compete with members of the same sex
      • Artificial selection  Process by which humans use animal and plant breeding to selectively develop particular phenotypic traits
      • Ecological selection  Natural selection without sexual selection
    • Gene flow  The transfer of genetic variation from one population to another
    • Genetic drift  The change in the frequency of an existing gene variant in a population
      • Small population size  Statistical effects of small numbers on a population
      • Population bottleneck  The effects of a sharp reduction in numbers on the diversity and robustness of the population
      • Founder effect  Loss of genetic variation that occurs when a new population is established by a very small number of individuals
      • Coalescent theory  A model for tracing the history of genetic variation
  • Variation
    • Genetic variation  The concept and mechanisms of variation in alleles of genes
      • Genetic diversity  The total number of genetic characteristics in the genetic makeup of a species
      • Gene frequency  The relative frequency of a variant of a gene at a particular locus in a population
      • Polymorphism (biology)  Occurrence of two or more clearly different morphs or forms in the population of a species
  • Key concepts
    • Hardy-Weinberg law  Allele and genotype frequencies in a population will remain constant over generations in the absence of other evolutionary influences
    • Genetic linkage  The tendency of DNA sequences that are close together on a chromosome to be inherited together
    • Identity by descent  Identical nucleotide sequence due to inheritance without recombination from a common ancester
    • Linkage disequilibrium  The non-random association of alleles at two or more genetic loci
    • Fisher's fundamental theorem  A principle relating genetic variance to fitness
    • Neutral theory  Most evolutionary changes at molecular level are not caused by natural selection but by genetic drift of mutant alleles that do not affect an organism's abiity to survive and reproduce
    • Shifting balance theory  A theory suggesting that adaptive evolution may proceed most quickly when subpopulations have restricted gene flow
    • Price equation  Description of how a trait or gene changes in frequency over time
    • Coefficient of relationship  A measure of the degree of biological relationship between two individuals
    • Fitness  The average contribution to the gene pool of the next generation made by individuals of the specified genotype or phenotype
    • Heritability  Estimation of effect of genetic variation on phenotypic variation of a trait
  • Effects of selection
  • Related topics
    • Microevolution  The change in allele frequencies that occurs over time within a population
    • Evolutionary game theory  The application of game theory to evolving populations in biology
    • Fitness landscape  Model used to visualise relationship between genotypes and reproductive success
    • Genetic genealogy  The use of DNA testing in combination with traditional genealogical methods to infer relationships between individuals and find ancestors
    • Quantitative genetics  The study of the inheritance of continuously variable traits

Evolutionary phenomena

Modelling

  • Emergent evolution  The hypothesis that, in the course of evolution, some entirely new properties, such as mind and consciousness, appear at certain critical points
  • Epic of evolution  A narrative that blends religious and scientific views of cosmic, biological and sociocultural evolution in a mythological manner
  • Evolution window  A narrow band of mutation step size that is conducive to significant evolutionary progress
  • Evolutionary dynamics  The study of the mathematical principles according to which biological organisms and cultural ideas evolve
  • Evolutionary game theory  The application of game theory to evolving populations in biology
  • Evolutionary graph theory  An approach to studying how topology affects evolution of a population
  • Evolutionary invasion analysis  Mathematical modeling techniques that use differential equations to study the long-term evolution of traits in asexually reproducing populations
  • Largest-scale trends in evolution  The low end minimum limit for complexity of living organisms may result in a general gradual trend for increased complexity over time

Taxonomy, systematics, and phylogeny

Fundamentals

Basic concepts of phylogenetics

  • Phylogenetic tree  Diagrammatic hypothesis about the evolutionary relationships of a group of organisms
  • Phylogenetic network  Any graph used to visualize evolutionary relationships
  • Long branch attraction  A form of systematic error whereby distantly related lineages are incorrectly inferred to be closely related
  • Clade  A group of organisms that consists of a common ancestor and all its lineal descendants
  • Grade  Non-monophyletic grouping of organisms united by morphological or physiological characteristics
  • Ghost lineage  A phylogenetic lineage that is inferred to exist but has no fossil record.

Inference methods

Current topics

Group Traits

  • Symplesiomorphy  An ancestral character or trait state shared by two or more taxa
  • Apomorphy  A shared characteristic that differs from the earlier ancestors that distinguishes a clade from other organisms
  • Synapomorphy  A shared characteristic that differs from the earlier ancestors that distinguishes a clade from other organisms
  • Autapomorphy  A distinctive feature, known as a derived trait, that is unique to a given taxon

Group Types

  • Monophyly  Property of a group of including all taxa descendant from a common ancestral species
  • Paraphyly  Property of a group which includes only descendants of a common ancestor, but excludes at least one monophyletic subgroup
  • Polyphyly  A set of organisms that do not share an immediate common ancestor

Evolution of biodiversity

Origin and evolutionary history of life

Evolution of organisms

Evolution of tetrapods

Evolution of other animals

Evolution of plants

Evolution of other taxa

Evolution of cells, organs, and systems

Evolution of molecules and genes

  • Directed evolution  A method used in protein engineering that mimics the process of natural selection to steer proteins or nucleic acids toward a user-defined goal
  • Error threshold (evolution)  A limit on the number of base pairs a self-replicating molecule may have before mutation will destroy the information in subsequent generations of the molecule
  • Evolution of DNA
  • Evolution of dominance
  • Gene-centered view of evolution  Reasoning that since heritable information is passed from generation to generation almost exclusively by DNA, natural selection and evolution are best considered from the perspective of genes
  • Genome evolution  The process by which a genome changes in structure or size over time
  • Hologenome theory of evolution  Evolutionary view of an individual multicellular organism as a community of the host plus all of its symbiotic microbes
  • Molecular evolution  The process of change in the sequence composition of cellular molecules across generations
  • Neutral network (evolution)  A set of genes all related by point mutations that have equivalent function or fitness
  • RNA-based evolution  A theory that posits that RNA is a dynamic and independent role-player in determining phenotype

Evolution of behaviour

  • Co-operation (evolution)  Evolutionary process where groups of organisms work or act together for common or mutual benefits
  • Evolution of biparental care in tropical frogs  The evolution of the behaviour in frogs in which both the mother and father raise their offspring
  • Evolution of emotion  Study of the evolution of emotions
  • Evolution of empathy  The capacity to understand or feel what another person is experiencing
  • Evolution of eusociality  Origins of cooperative brood care, overlapping generations within a colony of adults, and a division of labor into reproductive and non-reproductive groups.
  • Monogamy in animals  The natural history of mating systems in which species pair bond to raise offspring
  • Reciprocal altruism  Behaviour whereby an organism acts in a manner that temporarily reduces its fitness while increasing another organism's fitness in the expectation of reciprocity
  • Reciprocity (evolution)  Mechanisms whereby the evolution of cooperative or altruistic behaviour may be favoured by the probability of future mutual interactions

Evolution of other processes

Applications in other disciplines

Evolutionary issues

Controversy about evolution

Religious and philosophical views of evolution

  • Acceptance of evolution by religious groups  General review of religious attitudes towards scientific descriptions of evolution, and where relevant, their counterclaims
  • Atheistic evolution
  • Conscious evolution  The hypothetical ability of the human species to choose what they will become
  • Buddhism and evolution  As no major principles of Buddhism contradict it, many Buddhists tacitly accept the theory of evolution
  • Catholic Church and evolution  The Catholic Church supports theistic evolutionism, although Catholics are free not to believe in any part of evolutionary theory
  • Hindu views on evolution  There is no major conflict between the religious beliefs of Hinduism and acceptance of the science of evolution
  • Islamic views on evolution  Islamic views on evolution are diverse, ranging from theistic evolution to Old Earth creationism
  • Jewish views on evolution  Jewish views on evolution includes a continuum of views about the theory of evolution
  • Mormon views on evolution  The Church of Jesus Christ of Latter-day Saints takes no official position on whether or not biological evolution has occurred
  • Theistic evolution  Views that regard religious teachings about God as compatible with modern scientific understanding about biological evolution

Influence of evolutionary theory

Publications and organizations concerning evolution

Books

Journals

Organizations

Evolution scholars and researchers

Prominent evolutionary biologists

See also


References

    General information
    • Evolution on In Our Time at the BBC
    • "Evolution". New Scientist. Retrieved May 30, 2011.
    • "Evolution Resources from the National Academies". U.S. National Academy of Sciences. Retrieved May 30, 2011.
    • "Understanding Evolution: your one-stop resource for information on Evolution". University of California, Berkeley. Retrieved May 30, 2011.
    • "Evolution of Evolution – 150 Years of Darwin's "On the Origin of Species"". National Science Foundation. Retrieved May 30, 2011.
    • Human Timeline (Interactive)Smithsonian, National Museum of Natural History (August 2016).
    Experiments concerning the process of biological evolution
    • Lenski RE. "Experimental Evolution – Michigan State University". Retrieved July 31, 2013.
    • Algorithms, games, and evolution, Proceedings of the National Academy of Sciences of the USA
    Online lectures
    • Carroll SB. "The Making of the Fittest". Archived from the original on July 18, 2011. Retrieved May 30, 2011.
    • Stearns SC. "Principles of Evolution, Ecology and Behavior". Archived from the original on March 23, 2011. Retrieved August 30, 2011.
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